import os
import secrets
from typing import Any, Dict, List, Optional, Union

from pydantic import AnyHttpUrl, BaseSettings, EmailStr, HttpUrl, PostgresDsn, validator


class Settings(BaseSettings):
    # dev,test,prod
    ENV: str
    API_V1_STR: str = "/smarttrading/api/v1"
    SECRET_KEY: str = secrets.token_urlsafe(32)
    # 60 minutes * 24 hours * 8 days = 8 days
    ACCESS_TOKEN_EXPIRE_MINUTES: int = 60 * 24 * 8
    SERVER_NAME: str
    SERVER_HOST: AnyHttpUrl
    # BACKEND_CORS_ORIGINS is a JSON-formatted list of origins
    # e.g: '["http://localhost", "http://localhost:4200", "http://localhost:3000", \
    # "http://localhost:8080", "http://local.dockertoolbox.tiangolo.com"]'
    # BACKEND_CORS_ORIGINS: List[AnyHttpUrl] = []

    # @validator("BACKEND_CORS_ORIGINS", pre=True)
    # def assemble_cors_origins(cls, v: Union[str, List[str]]) -> Union[List[str], str]:
    #     if isinstance(v, str) and not v.startswith("["):
    #         return [i.strip() for i in v.split(",")]
    #     elif isinstance(v, (list, str)):
    #         return v
    #     raise ValueError(v)

    PROJECT_NAME: str
    SENTRY_DSN: Optional[HttpUrl] = None

    # @validator("SENTRY_DSN", pre=True)
    # def sentry_dsn_can_be_blank(cls, v: str) -> Optional[str]:
    #     if len(v) == 0:
    #         return None
    #     return v

    SQLALCHEMY_DATABASE_URI: str

    # @validator("SQLALCHEMY_DATABASE_URI", pre=True)
    # def assemble_db_connection(cls, v: Optional[str], values: Dict[str, Any]) -> Any:
    #     if isinstance(v, str):
    #         return v
    #     return PostgresDsn.build(
    #         scheme="postgresql",
    #         user=values.get("POSTGRES_USER"),
    #         password=values.get("POSTGRES_PASSWORD"),
    #         host=values.get("POSTGRES_SERVER"),
    #         path=f"/{values.get('POSTGRES_DB') or ''}",
    #     )
    REDIS_HOST: str
    REDIS_PORT: int
    REDIS_PASSWORD: str
    REDIS_DB: int

    SMTP_TLS: bool = True
    SMTP_PORT: Optional[int] = None
    SMTP_HOST: Optional[str] = None
    SMTP_USER: Optional[str] = None
    SMTP_PASSWORD: Optional[str] = None
    EMAILS_FROM_EMAIL: Optional[EmailStr] = None
    EMAILS_FROM_NAME: Optional[str] = None

    @validator("EMAILS_FROM_NAME")
    def get_project_name(cls, v: Optional[str], values: Dict[str, Any]) -> str:
        if not v:
            return values["PROJECT_NAME"]
        return v

    EMAIL_RESET_TOKEN_EXPIRE_HOURS: int = 48
    EMAIL_TEMPLATES_DIR: str = "/app/app/email-templates/build"
    EMAILS_ENABLED: bool = False

    # @validator("EMAILS_ENABLED", pre=True)
    # def get_emails_enabled(cls, v: bool, values: Dict[str, Any]) -> bool:
    #     return bool(
    #         values.get("SMTP_HOST")
    #         and values.get("SMTP_PORT")
    #         and values.get("EMAILS_FROM_EMAIL")
    #     )

    EMAIL_TEST_USER: EmailStr = "test@example.com"  # type: ignore
    FIRST_SUPERUSER: EmailStr
    FIRST_SUPERUSER_PASSWORD: str
    USERS_OPEN_REGISTRATION: bool = False
    SUPERUSER_ID: int

    # 选股任务每个任务执行数量
    PICK_TASK_PIECE: int = 500
    LOG_BASE_DIR: str

    PROXY_HOST: str = ""
    PROXY_PORT: int = None
    LOG_LEVEL: str = "INFO"

    DINGTALK_ROBOTS: str = ""
    JQDATA_KEY: str = ""
    JQDATA_SECRET: str = ""

    class Config:
        case_sensitive = True


env_file = os.getenv("ENV_FILE_PATH")
settings = Settings(env_file)
